MITSUBISHI HD6000
Instrukcja Serwisowa

MODEL: HD-6000
[Video Circuit] 2. Sub-Y Gain
Measuring Instrument Test Point Ext. Trigger Measuring Range Input Signal Input Terminal

Purpose: Symptom:

To set the sub picture Y level Incorrect analog source sub picture brightness level.

Oscilloscope TPY & TPSY -----------Color bars External Input

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Supply a Color Bar pattern with 100% white signal to an External Input. Select the Color Bars as the source for both the main and sub pictures. Connect a scope to TPY (Main Luminance) & TPSY (Sub Luminance). Enter the Alignment Mode (MENU-2-4-5-7) Select the SMTX function (AUDIO button). Select adjust item #14 YDRS (VIDEO button). Set the data so the waveform at TPSY equals TPY. (ADJUST buttons). Press �ENTER� to save data. Press �MENU� twice to exit the service mode.

PWB-SIGNAL (Partial)

TPSY

TPY

[Video Circuit] 3. Sub Picture Offset
Measuring Instrument Test Point Ext. Trigger Measuring Range Input Signal Input Terminal -----------------Full White Raster External Input

Purpose: Symptom:

To match sub picture white to main picture white Sub picture white differs from white in the main picture.

Supply a full white raster signal to an External Input. Select the White raster as the source for both the main and sub pictures. Use the PIP/POP buttion to select the Single PIP mode. Enter the Alignment Mode (MENU-2-4-5-7) Select the AD9883A function (AUDIO button). Select item #12 ROFF and #14 BOFF (VIDEO button). Set the data fore items #12 and #14 so the sub picture white is close to that in the main picture. (ADJUST buttons). 7. Press �ENTER� to save data. 8. Press �MENU� twice to exit the service mode.

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